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chiraganand

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**Summary::**10 values are divided into 4 groups and need a combination of these with restrictions placed on group size, ordering and combinations

I have a combinations question.. i have 4 group of values A , B, C and D, with A-2 values, B-3 values , C-2 values, D-3 values.

1. From each group only one value has to be taken A and B are together and C and D are together. So 1 value from A , 1 Value from B and then different combinations of C and D (maintaining 1 value each).

2. The order of the values from the groups is interchangeable that is 1-A 1-B 1-C 1-D or 1-B 1-A 1-C 1-D or 1-B 1-A 1-D 1-C so on..

I am trying to calculate the number of combinations but I am coming up short.. according to me there should be 36 different combinations but i am unable to take the flexible ordering into account. Can someone help me with this

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